Telecom infrastructure maker Nokia Siemens Networks (NSN) today announced expansion at its second facility near here.

The company, after entering into domestic market in 2007, manufactures mobile equipments including base stations and semi-conductors at the Greenfield facility at Oragadam near here spread across 35 acres.

At the time of inauguration, it announced an investment of $70 million spread over a period of three years.

With the expansion of the facility, the company increased the 28 product lines to 33 as part of manufacturing new products.

"India is a very key market for us... We have planned to increase the plant from 35,000 square metres to 55,000 square metres." Nokia Siemens Networks Operations - Head and Executive Board Member Herbet Merz told reporters here.

He said they had made investments of $15 million for the plant expansion making the total cumulative investments to $70 million at the Chennai plant.

He said the company was also expanding distribution site at the facility so that it could also increase the contribution of exports which is currently at 37%. The company ships some of its products manufactured here to United States, Europe, and Asia-Pacific region.

Nokia Siemens Networks also unveiled the "Flexi multi-radio" to provide future-ready equipment to telecom operators and said the facility expansion would help the company to manufacture and distribute -- multiradio and LTE products, among others at the plant.

The facility would also help the company to offer energy-efficient equipment to reduce the carbon footprint of new network deployments.

The Finland headquartered company currently has 10 manufacturing facilities worldwide and employs about 75,000 people. In India it employs 1,250 people and holds about 30% market share in the infrastructure equipment industry.